Airport flood-lighting projector



June 17,- 1930. o. WER ER 1,765,354

AIRPORT FLOODLIGHTING PROJECTOR Filed June 22, 1927 45 INVENTOR AT l'ORNEY 05 bar Werner.

Patented June 17,1930

1 UNITED STATE" OSCAR WERNER, OF SOUTH BEND, INDIANA, ASSIGNOB, TO WESTINGHOUSE ELECTRIC &

MANUFACTURING COMPANY, A-COEPORATION OF PENNSYLVANIA AIRPORT FLOOD-LIGHTING PIROJ'EC'IOR Application filed June 22,

tain types of illuminating devices. 'How ever, in order to secure the proper control of the projected beam, ithas been found desirable that the focusing means provide threedimensional adjustment or" the lamp and also that thelamp be rotatably mounted to secure 'the proper filament position. 7 It is desirable that focusing of the lamp be done from out- ,side the projector housing, so that the refiector not ex'posed'unnecessarily to dust. and moisture while focusing the lamp. The

focusing device mustbe capable of fine' adjustment, so that a sharp focus maybe ob tained. ,In addition, the 'deviceshould be rugged. and dependable:

' Therefore, it is among the objects of invention to'provide afocusing device which shall have the above mentioned desirable teainexpensivetomanufacture. g Referrlngto the accompanying drawmgs,

tures and which shall be simple,rugged and in which like numerals of "reference indicate like. parts,

v Figure 1 1s a new partly in .perspectwe andv partly in section, ofmy focusing-device as applied 130 a floodlight, and

Fig. 2 is a top adjusting member. v v p .In order to better illustratemy invention,

I have shown-it in perspective in connection with a portion of a projector comprising a housing 6 in which.a'reflector 16,ot the usual type, is mounted.-

My focusing device comprisesan L-shaped. member 32 disposed in the housing inff-ront 0f reflector 16 with one arm orbranch, which I term the' focusingjbranch '33, extending along the bottom of thehousing at right angles to the reflector while the'other branch,

" termed the lateral adjustment branch 34, .is curved ,to conform to thecurvature ofthe housing and extends at right angle t t first named branch,- V

Springs 87 and 3 8 disposed 'midvvay v along each branch between the L-shaped plan view of the L-shaped 1 oneor twopztithree pivotal points-formed shank46' and nut 50, bolt 42 and nut:4 4,-

member andthe housing to bias the L-shaped member away from the housing. Bolts 41' 1 and 42 engage the ends of the branches and project loosely through the housing. Thumb nuts 43 and 44, termed the focaland lateral adjusting nuts,respectively, are disposed'on the bolts and'bear against theoutside of i the housing, fsoFth'at' movement of the nuts causes ,a corresponding movement of the ends of the respective branches.

The shank 4601: lamp standard 471s threaded throughjthe junction of, the tWo branches 33 and 34-and is disposed in an upright position with regardto the L-shaped t member. I A lampsoclret 5,2 and; incandescent lamp 53 are mounted on the shank 46, the shank being provided. with cable terminal bush--- ings, (not shown) inwhich' the cable termi movement. of the'nut causes acorresponding I up and, down movement of the shank. This nut is termed a vertical adjustment nut. It may be seen by inspection of the drawing that the L shaped member willjpivot about and bolt 41 and nut 43.

member so that the lamp 53and lamp-fila position.

reference tof-the L'-shaped' member by means 'Ofset screw.51 I I a" .mentmay beii otatedto the 'mostfefi ective Y i The shank "may belocked with -V.

t .In focusing the.lamp,'thefirst is" til the lamp 'is at the desired; elevation with 38, causethe L-shaped memberto move upto Y loosen oritightenj. all jt hreethumb {nuts un wardlyjat 'either-jthe ends or. the junction when the corresponding, thumb nuts' are.

loosened.- The secondjoper ation' consists in loosening ,OIJV tightening the thumb nut 44 25 s 1 V readily accomplished from'the outs de of the pivotal points of'ad-justment, a lamp stand- (Fig. 1) until the lamp filament'is at the desired lateral position. If the thumb nuts s3 and are untouched,'the lamp illremain at substantially a constant elevation during the lateral adjustment. When the desired lateral and elevational adjustments of the lamp have been completed,the thumb nut43 in front of the socket is turned to the right or to the left in order to tiltjthe lamp forwardly or backwardly until the proper focal distance from the reflector is obtained] The focusing operation does. not materially disturb the verticalor lateral adjustment.

As the projected area of the filament on the reflector-varies for different positions of the Y lamp, the socket 52 and shank 46 are'rotated'until thQClBSlIQCl projected area, and beam spread, is secured. 'Tlie'set screvv51 s then tightened to lock the lamp in the desired Position. r

My invention provides a quick and ready means'for a threedimensional adjustment of the lamp and means for rotating the lamp until the optimum position of the filament is obtained. The operation of focusing is lamp housing so'that theinterior'of the 'projector is not unnecessarily exposed to" dust. The ad ustment is of thejsimple and rugged character and the unit is relatively inexpensive to construct."

Although have described a specific embodiment of my device, I do not Wish to be limited thereto; It yis obvious that the lamp standard may 'beniountecl at any partof the L-shaped member and three-dimensional adjust-mer t secured. These and other modifications as may occur to those skilled in the: art.

may be made Without"departing from the spirit and scope of my invention, as defined I claim as'myl invention: A 1. In combination With a lamp housing, a focusing. device comprising an adjusting member having three triangularly disposed 'ard mounted at one pivotalpoint oflsaid adjusting' member: and means for pivotally moving said adjusting member on any one or any two of said pivotal points andrfor regulatinwthe elevation of said pivotal points ivith'jresp ectgto said housing.

" QJA focusing; device comprising 'means:

for mounting said device on a "lamp housing,

an L shaped m mber,a= lamp standard mount ed at right angles at the intersection- 0f the 1 branches of said L-shaped member, adjusting means at said intersection, and adjusting means atthe ends of said L-shaped members whereby three-dimensional adjustment of the lampstand'ard is secured. Q

1 8. A 'fo'cusingfdev ce conip'rising means formounting said device onagla'mp housing, an

' L shaped member, aflamp standardrotata'bly mounted right; angles at the intersection and lamp, and pro ecting through; the plat? and housing at right angles thereto, and

having screw threaded engagement with the and a nut on the standard engaging r the :Wall ofthe housing to constitute a third plate,

pivotal point of adjustment disposed in triangular relationsh p to the two, first named pivotal points,

' 5. A focusing and locking means for locking the device for use-in a lamp housing including an lg-shaped adjustable plate having adjusting means at the eXtremitics of the branches of the plate and a lamp standard having a lamp socket and lamp mounted thereoniiiounted at the intersection e of the branches of the L-shaped member, and L having screw threaded engagement with it and with a nut Which engages the Wall of'the housing, whereby the lamp is ad ustably and,

rotatably mounted with regard to the hous i for mounting said dev ce on ala nphous ng,

an adjusting member having three triangularly cisposed pivotal'points of adjustment, a lamp standard rotatably mounted in and having screw threaded engagement With one portion of said adjusting'member, said standan adjusting member. having three triangularly disposed pivotalpoints of adjustment, v a lamp standard rotatably mountedonfandengaging one portion of. said adjusting member, said standard, projecting through the housing and adjusting; means having A focusing device comprising means' screw threaded engagement between the ij standard; and housing to constitute Withthe standard one of the pivotal points of adjustment.

' In testimony whereof- 1 have hereunto subscribed my name this seventh day oftlune, l

' osonn ERN R! i 

